[Tagging] waterway=fish_pass consistency

Javier Sánchez Portero javiersanp at gmail.com
Thu Jul 19 07:57:28 UTC 2018


Hello

I personally prefer a few main values in the waterway to define the general
cases and subtags for specific cases like this, of the type of usage =
fiss_pass. If I am in front of an infrastructure of this type, its physical
characteristics will allow me to distinguish if it is a channel, ditch or
brook. If it was built for the purpose of fish passing it is a separate
issue. Are a fish_pass different in nature to any other waterway? Waterway
different in it's construction nature could be used as a fish_pass? If the
answers to this questions are no and yes, put the fish_pass value apart of
the main waterway key. This form seems simpler and more versatile to me.

By the way: in the table of values added to the wiki there is a strange
blank gap between the blue cells of ditch/brook and pressurised. Also the
culvert cell is misaligned with respect to the cave cell and others. Is
this intentional and has a meaning or an error when constructing the table
that can be corrected?

Regards, Javier

2018-07-19 8:30 GMT+01:00 Mateusz Konieczny <matkoniecz at tutanota.com>:

> In case of waterway=fish_pass I think that a new waterway is OK as
>
> - it is drastically different from other defined waterways
> - is not a navigable waterway
> - is not redefining already mapped objects
>
> 17. Lipiec 2018 23:04 od fl.infosreseaux at gmail.com:
>
>
> Hi all,
>
> A discussion has recently started about waterway=fish_pass here :
> https://wiki.openstreetmap.org/wiki/Talk:Tag:waterway%3Dfish_pass
>
> While writing https://wiki.openstreetmap.org/wiki/Proposed_features/
> Hydropower_water_supplies it was asked to not clutter waterway=* with
> spillway since it was a specific usage of a man made canal.
> Such ideas lead to separate waterway nature, usage and sometimes
> supporting infrastructure to get a tagging model with 3 different
> corresponding keys.
> A comprehensive table of waterways natures has been set here :
> https://wiki.openstreetmap.org/wiki/Key:waterway#Values
>
> May it be great to consider usage=fish_pass with waterway=* (canal,
> presumably) for sake of consistency?
>
> Feel free to read and comment on the Talk page
>
> All the best
>
> François
>
>
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